package map;

import javafx.print.Collation;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class MapDemo2 {
    public static void main(String[] args) {
        Map<String,Integer> map = new HashMap<>();
        map.put("语文",98);
        map.put("数学",58);
        map.put("英语",96);
        map.put("物理",93);
        map.put("化学",98);
        Set<String> keySet = map.keySet();
        for (String key:keySet){
            System.out.println(key);
        }
        Set<Map.Entry<String,Integer>> entrySet = map.entrySet();
        for (Map.Entry<String,Integer> e:entrySet){
            String  key = e.getKey();
            Integer value = e.getValue();
            System.out.println(key+":"+value);
        }
        Collection<Integer> values = map.values();
        for (Integer value:values){
            System.out.println("value:"+value);
        }
        map.forEach(
                (k,v)-> System.out.println(k+":"+v)
        );
    }
}
